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Device and method for recovering high-temperature sensible heat of liquid blast furnace slag

A blast furnace slag and high temperature technology, which is applied in the field of devices for recovering high temperature sensible heat of liquid blast furnace slag, can solve the problems of thermal energy quality degradation, large water consumption, and inability to effectively recycle heat.

Inactive Publication Date: 2015-04-29
NORTHEASTERN UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] Aiming at the problems that the water quenching method of liquid blast furnace slag has large water consumption, the heat cannot be effectively recycled and utilized, the ratio of dry-type recovery of blast furnace slag is large, the power consumption is high, and the quality of heat energy is reduced. The device and method of the invention aim to efficiently, economically, environmentally friendly, and energy-saving use of high-temperature waste heat resources of liquid blast furnace slag, and the processed blast furnace slag can meet the requirements of cement production

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  • Device and method for recovering high-temperature sensible heat of liquid blast furnace slag
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  • Device and method for recovering high-temperature sensible heat of liquid blast furnace slag

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing, the present invention will be further described:

[0030]The invention proposes a device for recovering high-temperature sensible heat of liquid blast furnace slag, which is characterized in that: figure 1 As shown in , the device mainly includes tundish 1, slag flow pipe 2, granulation reactor 3, rotor 4, frequency conversion speed regulation motor 5, granulated slag packed bed 6, ring pipe 7, nozzle 8, gas outlet 9 , a rotary air distributor 10, a motor 11, and a rotary discharge valve 12; the top of the granulation reactor 3 is provided with a liquid blast furnace slag inlet (slag flow pipe 2) and a gas outlet 9, and above the slag flow pipe 2 is a tundish 1 , the inside of the granulation reactor 3 is equipped with a rotor 4 and a frequency conversion motor 5 for driving the rotor 4, and 6~8 nozzles 8 are arranged on the walls of the granulation reactor 3, and the nozzles 8 and the ring pipe 7 connected; the bottom of...

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Abstract

The invention relates to the technical field of waste heat and remained energy recovery in an iron and steel industry, in particular to a device and a method for recovering high-temperature sensible heat of liquid blast furnace slag. The method comprises the steps that the high-temperature sensible heat of the liquid blast furnace slag is used to conduct CH4-H2O-CO2 reforming reaction to produce methyl alcohol, and the cooled blast furnace slag is used to produce cement. According to the device and the method, high-temperature waste heat resources of the liquid blast furnace slag are utilized in a high-efficiency, economical, environment-friendly and energy-saving manner through dry granulation, sensible heat recovery and energy conversion; the processed blast furnace slag can meet the manufacturing requirement of the cement; and the produced methyl alcohol belongs to a widely-applied high added-value product, and meets the development requirement of the future methyl alcohol economy.

Description

technical field [0001] The invention belongs to the technical field of waste heat and energy recovery in the iron and steel industry, and in particular relates to a device and a method for recovering high-temperature sensible heat of liquid blast furnace slag. Background technique [0002] The iron and steel industry provides important basic raw materials for the development of the national economy, and is a resource-intensive industry that consumes a lot of energy and resources. With the rapid growth of steel production, resources, energy and pollutant emissions have become restrictive factors restricting the further development of my country's steel industry. Although the iron and steel industry is a major energy consumer and pollutant discharger in the national economy, it is also one of the industries with great potential for energy conservation and emission reduction. Among them, recycling all kinds of waste heat is an important breakthrough for further energy saving ...

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Application Information

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IPC IPC(8): C21B3/08
CPCC21B2400/02C21B2400/026C21B2400/074C21B2400/08Y02P10/20
Inventor 王连勇李小玲蔡九菊
Owner NORTHEASTERN UNIV
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